This comprehensive workshop service manual provides detailed instructions and diagrams for servicing and repairing TORO GREENSMaster TRIFLEX HYBRID 3320 and 3420 riding and walk power reel mowers. It covers both the 627 cc Briggs & Stratton, 4-cycle, V-twin cylinder, OHV, air-cooled, petrol engine (model 385447) and the 898 cc 3-cylinder, Kubota water-cooled diesel engine (model D902-E3B). The manual is designed for both experienced mechanics and DIY enthusiasts, offering clear and concise information for every maintenance, repair, and service procedure.

The manual includes detailed sections on:

* **Safety Precaution:** Essential safety guidelines for working with the mower.
* **Maintenance & Record:** A dedicated section for keeping track of maintenance schedules and records.
* **Engine Specification:** Comprehensive data on both engine types.
* **Engine System:** In-depth information about the engine components, their functions, and troubleshooting.
* **Engine Adjustment:** Detailed instructions for adjusting various engine parameters.
* **Muffler & Air Cleaner:** Servicing and troubleshooting guide for the exhaust and air intake systems.
* **Fuel System:** Information on fuel tank, lines, filters, and carburetor maintenance.
* **Cooling System:** Maintenance instructions for the cooling system (applicable to the diesel engine).
* **Fuel Tank & Radiator:** Troubleshooting and repair guidance for the fuel tank and radiator.
* **Engine Removal & Reinstallation:** Step-by-step procedures for removing and reinstalling the engine.
* **Hydraulic System:** Detailed explanation of the hydraulic system, including components and operation.
* **Exhaust System:** Explanation and maintenance of the exhaust system.
* **Hydraulic Schematic:** Diagrams illustrating the hydraulic system flow.
* **Throttle Control Adjustment:** Adjusting the throttle control for optimal performance.
* **Hydraulic Flow Diagram:** Diagrams illustrating hydraulic fluid flow throughout the system.
* **Testing & Adjustment:** Procedures for testing and adjusting various hydraulic system components.
* **Fluid & Oil Filter:** Information on the correct fluids and filters, and their replacement intervals.
* **Traction Belt & Hoses:** Servicing and replacement instructions for traction belts and hydraulic hoses.
* **Wheel Motors:** Maintenance procedures for the wheel motors.
* **Reel Motor Service:** Detailed instructions for maintaining and repairing the reel motor.
* **Hydraulic Manifold:** Troubleshooting and repair guide for the hydraulic manifold.
* **Control Valve Service:** Instructions for servicing and adjusting control valves.
* **Piston & Gear Pump:** Maintenance information for the piston and gear pumps.
* **Steering Control Valve:** Servicing and adjustment procedures for the steering control valve.
* **Lift Cylinder Service:** Instructions for maintaining and repairing the lift cylinders.
* **Steering Cylinder Service:** Instructions for servicing and repairing the steering cylinders.
* **Electrical System:** Explanation of the electrical system, components, and troubleshooting.
* **Component Testing:** Procedures for testing various electrical components.
* **Battery System:** Information on battery maintenance and replacement.
* **Fork & Wheel System:** Servicing and repair procedures for the forks and wheels.
* **Brake System:** Detailed instructions for maintaining and repairing the brake system.
* **Steering Column:** Information on the steering column, its components, and maintenance.
* **Lift Arms & Hood System:** Servicing and repair procedures for the lift arms and hood.
* **DPA Cutting Unit:** Instructions for maintaining and repairing the cutting unit.
* **Groomer System:** Information on the grooming system, its components, and maintenance.
* **Operator Cab System:** Explanation of the operator cab system and its features.
* **Special Tools:** A list of special tools required for various procedures.
* **Troubleshooting:** A comprehensive troubleshooting guide for common problems.
* **Electrical Diagrams:** Detailed electrical diagrams for identifying and diagnosing electrical issues.

This manual provides the necessary information for keeping your TORO GREENSMaster TRIFLEX HYBRID 3320 and 3420 mower in top condition.

The TORO GREENSMaster TRIFLEX HYBRID 3320 and 3420 are high-performance riding and walk power reel mowers designed for professional groundskeeping and golf course maintenance. These machines are renowned for their precision cutting capabilities, enhanced maneuverability, and innovative hybrid technology that blends the power of a gasoline engine with the efficiency of electric propulsion. The TriFlex platform boasts a unique three-wheel design, providing exceptional stability and maneuverability on challenging terrain. This innovative configuration allows the operator to navigate tight turns and intricate landscapes without sacrificing cutting quality.

The TORO GREENSMaster TRIFLEX HYBRID 3320 and 3420 models feature a powerful gasoline engine that drives the reel blades, ensuring consistent cutting power even on thick and tall grass. The hybrid system adds an electric motor that assists the engine, offering increased torque and efficiency, particularly for demanding tasks like cutting at high speeds or operating on inclines. This hybrid approach optimizes fuel consumption and reduces emissions, making the TriFlex Hybrid line environmentally friendly without compromising performance. The TriFlex cutting units are equipped with precision-ground, hardened steel reels and blades designed for exceptional cut quality. The adjustable cutting height allows for fine-tuning the desired grass length, ensuring a consistent, polished finish. Further enhancing the cutting experience, the TriFlex Hybrid models incorporate advanced features like a centralized height adjustment system and a floating deck that contours to uneven terrain, ensuring optimal cutting performance across varying conditions.